LOS ANGELES – Comorbidities are common in patients with chronic obstructive pulmonary disease, especially cardiovascular disease, diabetes, anemia, and osteoporosis, results from a single-center analysis showed.
“These affect the course and outcome of COPD, so identification and treatment of these comorbidities is very important,” Hamdy Mohammadien, MD, said in an interview in advance of the annual meeting of the American College of Chest Physicians.
In an effort to estimate the presence of comorbidities in patients with COPD and to assess the relationship of comorbid diseases with age, sex, C-reactive protein, and COPD severity, Dr. Mohammadien and his associates at Sohag (Egypt) University, retrospectively evaluated 400 COPD patients who were at least 40 years of age. Those who presented with bronchial asthma or other lung diseases were excluded from the analysis. The mean age of patients was 62 years, 69% were male, and 36% were current smokers. Their mean FEV1/FVC ratio (forced expiratory volume in 1 second/forced vital capacity) was 48%, and 57% had two or more exacerbations in the previous year.
Dr. Mohammadien reported that all patients had at least one comorbidity. The most common comorbidities were cardiovascular diseases (85%), diabetes (35%), dyslipidemia (23%), osteopenia (11%), anemia (10%), muscle wasting (9%), pneumonia (7%), osteoporosis (6%), GERD (2%), and lung cancer (2%). He also noted that the association between cardiovascular events, dyslipidemia, diabetes, osteoporosis, muscle wasting, and anemia was highly significant in COPD patients aged 60 years and older, in men, and in patients with stage III and IV COPD. In addition, a significant relationship was observed between a positive CRP level and each comorbidity, with the exception of gastroesophageal reflux disease and lung cancer. The three comorbidities with the greatest significance were ischemic heart disease (P = .0001), dyslipidemia (P = .0001), and pneumonia (P = .0003). Finally, frequent exacerbators were significantly more likely to have two or more comorbidities (odds ratio 2; P = .04) and to have more hospitalizations in the past year (P less than .01).
“Comorbidities are common in patients with COPD, and have a significant impact on health status and prognosis, thus justifying the need for a comprehensive and integrating therapeutic approach,” Dr. Mohammadien said at the meeting. “In the management of COPD all these conditions need to be carefully evaluated and treated.”
He acknowledged certain limitations of the study, including its relatively small sample size and the fact that bone density was measured by sonar and not by dual-energy x-ray absorptiometry. Dr. Mohammadien reported having no financial disclosures.